Car Loan Payment basic

public class Main {

    public static void main(String[] args) {
    int carLoan = 10000;
    int loanLength = 3;
    int interestRate = 5;
    int downPayment = 2000;

    if (loanLength <=0 || interestRate <=0){
        System.out.println("Error! You must make a valid car loan (loan length and interest rate a positive number");
    }else if (downPayment >= carLoan){
        System.out.println("No loan required, the car can be paid for in full");
    } else{
        int remainingBalance = carLoan - downPayment;
        int months = loanLength * 12;
        int monthlyBalance = remainingBalance / months;
        int interest = (monthlyBalance * interestRate) / 100;
        int monthlyPayment = monthlyBalance + interest;

        System.out.println(monthlyPayment);
    }
    }
}